A businessman had two sons. One was six years old and the other was nine.

一位生意人有两个儿子，分别为六岁和九岁。

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The mice, all aged between nine and twelve months of age, were fed on one of two diets.

研究人员称，老鼠的年龄均在9到12个月之间，全部喂食两种食物中的一种。

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The amount of money you could borrow nine months ago would probably be one billion, two billion. Now it's doubled that easily.

九个月前我们能借到的钱可能是10亿、20亿美元，但现在可以很容易的借到两倍的资金。

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The new guidelines say women age twenty-one to twenty-nine only need to get a Pap test every two years instead of yearly.

VOA: special.2009.11.25

If you take some from column one or two and you mix it with some from column eight and nine, bingo, you have reaction.

如果你从第一列或者第二列中选出一些元素,将其与第8列或者第9列的元素混合，好，就会发生化学反应。

麻省理工公开课 - 固态化学导论课程节选

Okay, which one is that? Seven o one three nine two four nine (70139249), what's...

我也一脸茫然，他们说的数字代表什么？70139249，什么意思？

社团小组信息 - SpeakingMax英语口语达人

Only one or two of the nine viral genes are used, in order to avoid the virus reconstituting itself by acquiring missing genes from the wild virus.

ECONOMIST: Recipes for an AIDS vaccine

In the 13th century, the election of one pope took two years and nine months, the diocese said.

CNN: Abuse victims' group names preferred picks for new pope

On Easter Sunday 2011, a fever of 106 degrees, caused by numerous serious side effects from my disease, landed me in the hospital for 30 days and snowballed into two surgeries, one of which took nine and a half hours, and an unexpected five-month absence from the company I founded.

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